Improvement in awls for heel-machines



mi offra Lettrsratent No. 113,008, dated March 28,1871.

EN IMPROVEMENT |'N AwLs Fon HEEL-MACHINES.

The Schedule referred to in these Letters Patent andmaklng part of thesame.

Know all men by these presents:

That I, HORACE H. BIeELow, of the city4 and county of Worcester, andCommonwealth of Massachusetts, have` invented'certain new andnsefulImprovements in .-Awls for Heel-Machines and I ldo hereby declare thatthe following is a full, clear, and exact description of the same,reference being had to the accompanying drawing which forms a part ofthis specification, and in which@ Figure l represents a front view of myimproved awls as set in their supportingeplate;

Figure 2 represents a Vand p Figure 3 represents, the awl-points.

bottom view of the same,-

upon an enlarged scale, one of To enable those skilled in theart towhich my invention belongs to make and use the same, I will proceed todescribe it in detail.

The nature of my invention consists in the peculiar construction Oi' theawl-points and the manner of combining them with t after described. Inthedrawingeir supporting-plate, as herein- .Ihe parts marked A indicatethe supporting-plate,

in which the upper ends of the lawls B are vrigidly secured, and bymeans of which they are attached to the platen of the heel-machine.

The awls B are arranged in a semicircularrow cor;

responding to the shape of' the heel, and they are secured in the plateA by dri ving themdown through openings in. the platefrom the upperside.

The openings areslightly upper ends, and the theY counter-sinking. frombeing drawn out countersunk around their awls. are headed so as to 'tinto The awls are thus prevented of the plate A by the action of themachine when withdrawing them from the heels.

The heads of the awls rest against the platen of the l machine'when theplate A isfin working position, and

the awls are thereby prevcn ward out of place.

ted" from being forced upe The points of the awls B are of the peculiarform shown in iig. 3, being ground ofi" considerably ymore at one side,a, than at the other, so that the point is inclined to one side.

The awls tionsvthat their points incline outward from the center' of thewhich are set so as to incline backward.

The result of this construction and arrangement is, that when the awls Bare forced down into the heels, the pressure upon the long side a of thepoints causes the awls to spring outward, and, thereby form the holesparallel with the .inclined edges ofthe heel.

ThevawlsA at the front edge of the heel spring backwardfin a. similarmanner, so that when thernails are driven into the holes thus' i'ormedtheyrwill not be too near the surface of the leather at the frontedge ofthe heel.

The positions of the awls in the plate A may be reversed, sol that theinclination of their points will spring Athe awls inward instead ofoutward. This change may sometimes be Adesirable in case the-heel shouldbe pressed or formed with the bottom up, or

in case the -'nails by which the heels are` attached should be drivenfrom the inside ofthe shoe or boot.

Having described my improved awls for-heel-ma-- chines,

What I claim therein as new and of my invention, and desire tosecure byLettersPatent, is-

l. The combination ofthe peculiarly-constructed awls B, with theirsupporting-plate A, substantially as shown and described.

2. The peculiarly-constructed awl B, the point of which is made in formas fully shown in the drawing.

HORACE H. BIGELOW.

Witnesses: THos. H. DODGE, A. E. `,PEIRCLL B are set into the plate A insuch posiheeLeXcepting those at the front side, .r

